Research paper
Assessment of groundwater potential for conjunctive water use in a large irrigation project in India

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Abstract

In many large-surface irrigation projects, the potential for groundwater development has increased significantly. The additional potential can be used to develop conjunctive water management plans for augmenting canal water supplies and increasing agricultural productivity in the project area, if its spatial distribution is also known. A methodology for determining the available additional groundwater potential and its distribution in the Mahi Right Bank Canal Project in Gujarat is presented. The procedure is based on the use of specific empirical constants for estimating groundwater recharge from the water conveyance and distribution system and the annual water balance of the project. The spatial distribution of groundwater potential is determined by “recharge distribution coefficients” derived from a digital simulation model of the groundwater basin of the project area.

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